Chejisheng is an integrated full-industry-chain service provider with two decades of deep roots in China’s automotive modification sector. Formerly branded AutoMaster, founded in 2016, the brand has undergone years of refinement and iterative upgrading to evolve into an industry benchmark enterprise integrating automotive performance upgrading & modification, professional technical training, remote technical support, and independent R&D, design, manufacturing and sales of proprietary products.
Since its inception, the brand has specialized in modification for German luxury performance vehicles. It inherits the performance DNA of premium marques including BMW M, Mercedes-AMG, Audi RS and Porsche, carrying forward AutoMaster’s craftsmanship and the premium heritage of Chemusi AMS. Centered on the core philosophy of "Ultimate Vehicle Upgrades, Sustained Brand Ascent", we deliver high-quality, professional one-stop automotive modification solutions for vehicle owners and industry practitioners alike. Backed by 20 years of technical expertise, a comprehensive product portfolio, thoughtful all-round services and consistent innovative R&D, Chejisheng has built an outstanding reputation in the automotive aftermarket. We have forged a complete ecosystem spanning products, technology, training and services, emerging as the trusted top choice for countless automotive modification enthusiasts and industry partners.
Corporate Development Timeline
Initial Foundation Phase: AutoMaster – Built on Original Craftsmanship to Lay a Professional Foundation
Twenty years ago, China’s automotive modification industry was still in its infancy. Driven by a passion for vehicle performance tuning and uncompromising craftsmanship, the brand was officially launched under the name AutoMaster, abbreviated as AM. From the very start, we focused on R&D of professional modification technology, concentrating on upgrades for German luxury vehicles. Drawing performance inspiration from BMW’s iconic tri-color M badge, we designed an exclusive combined AM logo. Our exquisite modification workmanship and rigorous quality control quickly secured our foothold in the industry, establishing a brand tone defined by professionalism, precision and perfection. As an early pioneer in China’s automotive modification space, we earned our first cohort of loyal clients and widespread industry recognition.
Progressive Expansion Phase: Chemusi AMS – Brand Upgrade & Integration of Luxury Automotive DNA
As the industry matured and market demands grew, the brand embarked on a strategic upgrade by launching sub-brand Chemusi AMS, marking a leap from specialized modification to diversified operations.
A stands for AUTO, Audi A series and Mercedes-AMG
M derives from BMW M, Munich, and the initial of the Chinese character "Mu"
S symbolizes Porsche Stuttgart, Audi RS, and the initial of the Chinese character "Si"
This nomenclature seamlessly merges the core DNA of the four major German luxury performance brands, endowing the brand with deeper premium performance connotations.
During this phase, our business scope expanded comprehensively. Beyond core modification services, we added wholesale and retail of auto parts to build a stable supply chain. We simultaneously launched professional technical training to cultivate elite talent for the sector, alongside remote technical support that eliminates geographical barriers and delivers nationwide technical assistance. This transition transformed us from a single-service modification workshop to a full-industry-chain enterprise, expanding our brand influence and establishing us as a formidable, well-regarded industry stalwart.
Innovative Ascent Phase: Chejisheng – Iterative Innovation Toward Industry Excellence
Drawing on the accumulated experience of the previous two eras, the brand entered a brand-new development stage with the launch of its flagship core brand Chejisheng, embarking on a new journey of relentless innovation and sustained growth. The three Chinese characters "Che Ji Sheng" fully embody our brand core: rooted in the automotive industry, we pursue supreme product quality, flawless modification craftsmanship and premium service experience, signifying the enterprise’s constant self-breakthrough, iterative optimization and steady upward growth.
In this stage, we strengthened independent product R&D to launch an exclusive lineup of high-performance modified auto parts, forming a closed-loop system of self-research, self-production and self-distribution. We continuously refined our technical training and remote service systems to empower industry practitioners, while advancing high-end custom modification to meet owners’ personalized, specialized demands — achieving dual elevation of brand value and industry standing.
From AutoMaster to Chemusi AMS, and now Chejisheng, our brand carries forward a consistent legacy and unwavering original aspiration, completing a remarkable transformation from a dedicated modification garage to a comprehensive full-industry-chain enterprise.

Corporate Culture
Core Mission
Elevate vehicle performance through supreme craftsmanship, empower industrial development with professional services, enable every car owner to enjoy ultimate driving pleasure, and drive standardized, high-quality growth of China’s automotive modification industry.
Core Values
Craftsmanship & Perfection: Delve deep into technical expertise and strive for constant improvement. We enforce strict standards for every modification procedure and auto part, uncompromising in our pursuit of ultimate quality.
Heritage & Innovation: Uphold two decades of brand craftsmanship and luxury performance DNA, while keeping pace with industry trends to iterate technologies and develop new products, sustaining lasting brand vitality.
Integrity & Commitment: Operate with integrity at all times. We stand accountable to clients, honor commitments to partners, and take responsibility for our employees, building our brand on word-of-mouth and conducting business with integrity worldwide.
Ambition & Ascent: Embrace the spirit of "Ji Sheng (Ultimate Ascent)", never settling for the status quo. We continuously break technical barriers, expand business boundaries, and pursue shared growth for the enterprise, clients and partners.
Corporate Spirit
Two decades of unchanging craftsmanship, endlessly chasing peak performance; an enduring brand heritage, forged through consistent innovation for long-term progress.
Service Philosophy
We take professionalism as our foundation, perfection as our path to reputation, and attentive service to warm every customer. We provide full-lifecycle, all-dimensional, high-efficiency automotive modification services, striving to be trusted long-term partners for all clients.
Brand Vision
To become a highly influential leading brand in China’s automotive modification industry, build an internationally recognized high-performance modification marque, drive industrial innovative development, and bring premium Chinese automotive modification craftsmanship to the global stage.